/*
 * Copyright [2021-present] [ahoo wang <ahoowang@qq.com> (https://github.com/Ahoo-Wang)].
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *      http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package me.ahoo.wow.metadata

import java.util.concurrent.ConcurrentHashMap

abstract class CacheableMetadataParser<TYPE, METADATA : Metadata> {
    private val cache: ConcurrentHashMap<TYPE, METADATA> = ConcurrentHashMap()

    fun parse(type: TYPE): METADATA {
        return cache.computeIfAbsent(type) {
            parseToMetadata(type)
        }
    }

    abstract fun parseToMetadata(type: TYPE): METADATA
}
